There isn't as much rock on the back side, but there definitely is rock. Most of it is north and west facing and therefore freezing cold in the winter. However, there are a few pockets of SE facing rock.
Getting There
Find a way through the reef. Its just best to consult a map for your specific destination. The Emery County OHV association maintains many established trails on old mining paths that are accessable to 4WD vehicles of various capabilities. Its a really good idea to check with them and get a good trail map and find out the conditions before heading out.
Bit puzzled about this location. Many routes done on the Eastern reef Slabs are from about 400' and 2000' .Routes have also been climbed at the back of the Reef slabs. There is a massive amount of rock at the back of the Reef slabs some up to 800' . So where is the area as above which seems to be out of the main developed climbing area of the Reef?
Just trying to note the vast area on the back side of the eastern reef. Per your suggestion, more specifics are found on the specific formations. I thought I was following your pattern, sorry if I messed it up.